[gps-talkusers] Re: Possible Bug

Also don't forget, as I think Charles mentioned some time ago, GPS has less 
resolution than the readings in your car.  Everything GPS is broken in to one 
second blocks where the dials are hard wired so the dials will show micro speed 
changes more accurately.  GPS is more accurarte when you're dealing with a 
constant rate of direction and speed.

  ----- Original Message ----- 
  From: PghJohn11@xxxxxxx 
  To: gps-talkusers@xxxxxxxxxxxxx 
  Sent: Saturday, May 10, 2008 5:17 PM
  Subject: [gps-talkusers] Re: Possible Bug


  Is Richard a bug?

  In a message dated 5/10/2008 6:08:58 P.M. Eastern Daylight Time, 
rich.irwin@xxxxxxxxxxx writes:
    Hey Richard, haven't seen you since our Mexico Cruise.

    Regarding this speed difference, our GPS systems should be much more
    reliable than any car speedometer.  The speedometer could be off for many
    reasons such as transmission and rear end gear ratio or tire size and
    pressure.

    Rich Irwin
    rich.irwin@xxxxxxxxxxx
    -----Original Message-----
    From: gps-talkusers-bounce@xxxxxxxxxxxxx
    [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Richard Bartholomew
    Sent: Friday, May 09, 2008 11:28 PM
    To: gps-talkusers@xxxxxxxxxxxxx
    Subject: [gps-talkusers] Re: Possible Bug

    I, too, have noticed the difference in reported speeds between a speedometer

    and the GPS - all versions of the GPS since, 2, I think and across 
    receivers.  However, I have put this down to the fact that I've been told 
    that car speedos are intentionally set slightly higher than actual speed in 
    an effort to curb speeding!

    Possibly not true, I suppose, but I like the sound of it!

    Regards

    Richard Bartholomew
    E-Mail:  richard_bartholomew@xxxxxxxxxxxxxxxx

    ----- Original Message ----- 
    From: "Alex Hall" <mehgcap@xxxxxxx>
    To: <gps-talkusers@xxxxxxxxxxxxx>
    Sent: Friday, May 09, 2008 2:05 AM
    Subject: [gps-talkusers] Re: Possible Bug


    > Actually, I have found this too as of v4 with a blue logger.  In lower 
    > versions with the same receiver and bn it reported fine, but now, 
    > especially while walking (as opposed to moving in a vehicle) it seems much

    > faster than it used to; my normal walking speed was around 2 mph or so and

    > now it is normally around 3-3.8 even though I walk the same.  This happens

    > with all types of coverage and, as I said, with v4 (sorry Sendero, but my 
    > money goes to keysoft first--v4 is good enough for me).
    >
    > Have a great day,
    > Alex
    >
    >> ----- Original Message -----
    >>From: Kevin Chao <kevinchao89@xxxxxxxxx
    >>To: <gps-talkusers@xxxxxxxxxxxxx
    >>Date sent: Thu, 8 May 2008 17:32:17 -0700
    >>Subject: [gps-talkusers] Re: Possible Bug
    >
    >>Jeff,
    >
    >>So, you are running the latest,Sendero GPS 4.22 and are noticing
    > that it
    >>seems to report the speed information 2-2.5 MPH below the actual
    > speed? I
    >>would seem about obtaining a Holux M-1000, the latest and
    > greatest supported
    >>receiver   and see if this issue is still occuring.  The only
    > thing that i
    >>can think of is the timing of iether the key press of for the GPS
    > to capture
    >>your speed is about a second off.
    >
    >>Most of the time, I have found the speed reported from a
    > speedometer and the
    >>Sendero GPS are insync.
    >
    >>Kevin
    >
    >>-----Original Message-----
    >>From: gps-talkusers-bounce@xxxxxxxxxxxxx
    >>[mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff
    > Molzow
    >>Sent: Thursday, May 08, 2008 12:13 PM
    >>To: gps-talkusers@xxxxxxxxxxxxx
    >>Subject: [gps-talkusers] Possible Bug
    >
    >>Hello All:
    >
    >>This is not a major bug, but thought I'd put it out there.  I
    > thought for a
    >>while that it was either my receiver or VoiceNote, but I'm
    > getting
    >>consistent speed differences when driving at highway speed
    > between the
    >>Sendero and 2 other tested GPS's and almost ANY speedometer.  In
    > all cases,
    >>I'm almost exactly 2 to 2.5 mph slower then their measured
    > speeds.  If they
    >>are traveling 70 mph, the Sendero will show 68 mph.  I don't
    > remember this
    >>error being present in earlier releases.  In the grand scheme of
    > things, not
    >>a huge difference and at walking speed, probably error is
    > non-existent,
    >>however I wanted to see if others are finding similar results.
    >
    >>For the record, I've tried this on a GPSlim236, the blue logger,
    > and the
    >>old Magellan (I think).  The one with the serial cable and 2
    > double A
    >>batteries.  I've also just gotten the motherboard replaced in my
    > VoiceNote QT
    >>so I don't think it's the bluetooth stack.  I compared my speed
    > reading
    >>between both a Garmin and Magellan car mounted GPS and have found
    > similar
    >>test differences between myself and those, and just about every
    > speedometer
    >>I've tested against.
    >
    >>Just Curious
    >>Jeff
    >
    >
    >>No virus found in this incoming message.
    >>Checked by AVG.
    >>Version: 7.5.524 / Virus Database: 269.23.10/1421 - Release Date:
    > 5/7/2008
    >>5:23 PM
    >
    >
    >>No virus found in this outgoing message.
    >>Checked by AVG.
    >>Version: 7.5.524 / Virus Database: 269.23.11/1422 - Release Date:
    > 5/8/2008
    >>5:24 PM
    >
    >
    >
    >
    >
    >
    >
    > __________ Information from ESET Smart Security, version of virus 
    > signature database 3090 (20080509) __________
    >
    > The message was checked by ESET Smart Security.
    >
    > http://www.eset.com
    >
    > 










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